In a kiosk that sells skirts, 175 grey skirts were sold and 25% of the remaining skirts that were sold were silver. Of the leftover, 40% of the skirts sold were blue skirts and the rest were red skirts. Given that the number of red skirts sold was 20% of the total number of skirts sold, how many silver and grey skirts were sold altogether?
25% =
25100 =
14 40% =
40100 =
25 20% =
20100 =
15
| Grey |
Silver |
Blue |
Red |
| 175 |
1x5 |
3x5 |
| |
|
2x3 |
3x3 |
| 4x9 |
1x9 |
| 25 u |
5 u |
6 u |
9 u |
The total number of blue and red shirts is the combined repeated identity. Make the total number of blue and red shirts the same. LCM of 3 and 5 is 15.
The number of red shirts is repeated. Make the number of red shirts the same. LCM of 9 and 1 is 9.
Number of grey skirts
= 36 u - 5 u - 6 u
= 25 u
25 u = 175
1 u = 175 ÷ 25 = 7
Number of silver and grey skirts
= 5 u + 175
= 5 x 7 + 175
= 35 + 175
= 210
Answer(s): 210
